Google Books Ngram Viewer

Graph these comma-separated phrases:
case-insensitive
between and from the corpus with smoothing of .  
Search in Google Books:

1800 - 1934 1935 1936 - 1942 1943 - 1979 1980 - 2000 neutral money English
1800 - 1942 1943 - 1961 1962 - 1966 1967 - 1991 1992 - 2000 forced savings English

Run your own experiment! Raw data is available for download here.
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